CN105238439A - Preparation method of compound type oil field demulsifier - Google Patents
Preparation method of compound type oil field demulsifier Download PDFInfo
- Publication number
- CN105238439A CN105238439A CN201510755691.0A CN201510755691A CN105238439A CN 105238439 A CN105238439 A CN 105238439A CN 201510755691 A CN201510755691 A CN 201510755691A CN 105238439 A CN105238439 A CN 105238439A
- Authority
- CN
- China
- Prior art keywords
- polyether glycol
- preparation
- oil field
- mass fraction
- field demulsifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Polyethers (AREA)
Abstract
The invention relates to demulsifier, in particular to a preparation method of compound type oil field demulsifier. The preparation method of the compound type oil field demulsifier comprises the steps that polyether polyol A with the molecular weight ranging from 1000 to 2000, polyether polyol B with the molecular weight ranging from 3000 to 5000 and polyether polyol C with the molecular weight ranging from 6000 to 9000 are mixed to be reacted with maleic anhydride, reaction is conducted continuously by adding an unsaturation double-bond compound, calcium chloride is added to be evenly mixed at last, and the compound type oil field demulsifier is prepared. According to the preparation method of the compound type oil field demulsifier, the effects of demulsification and dehydration on different substances in crude oil are achieved, and due to the fact that the same dehydration effect is guaranteed, the use amount is low, and the production cycle of products is greatly shortened.
Description
Technical field
The present invention relates to emulsion splitter, be specifically related to a kind of preparation method of compound oil field demulsifier.
Background technology
In oil production, usually containing moisture and impurity salt in crude oil.For improving crude quality and reducing transportation cost, generally add emulsion splitter and removing of moisture and impurity salt is carried out to crude oil.The emulsion splitter of current domestic use is mainly based on the single emulsion splitter of polyether-type.Because oil composition is complicated, molecular size range differs, and therefore the effect of the single emulsion splitter of polyether-type is unsatisfactory, its range of application also relative narrower.
CN102807748A discloses a kind of preparation method of high-performance complex oilfield demulsifier, first the method prepares different molecular weight polyethers emulsion splitter, obtain molecular weight 300 ~ 500 polyethers emulsion splitter A, molecular weight 700 ~ 900 polyethers emulsion splitter B, molecular weight 1500 ~ 2000 high-molecular-weight poly ethers emulsion splitter C, molecular weight 4000 ~ 5000 high-molecular-weight poly ethers emulsion splitter D, molecular weight 8000 ~ 10000 high-molecular-weight poly ethers emulsion splitter E; Then by composite by a certain percentage for the polyethers emulsion splitter of various different molecular weight, obtained high performance demulsifying agent.The high performance demulsifying agent that the present invention obtains is applicable to the breaking emulsion and dewatering of crude oil, has the advantage that broad spectrum is good, consumption is few.But above-mentioned oil field demulsifier preparation process is complicated, technique is tediously long, and life cycle of the product is longer.
Summary of the invention
The object of this invention is to provide a kind of preparation method of compound oil field demulsifier, the emulsion splitter obtained all has the effect of breaking emulsion and dewatering to materials different in crude oil, and dehydrating effect is good and consumption is few, and life cycle of the product is short.
The preparation method of compound oil field demulsifier of the present invention, after first the polyether glycol C of the polyether glycol B of the polyether glycol A of 1000 ~ 2000 molecular weight, 3000 ~ 5000 molecular weight, 6000 ~ 9000 molecular weight being mixed, react with maleic anhydride, add unsaturated double-bond compound again and continue reaction, finally add calcium chloride to mix, obtained compound oil field demulsifier.
Wherein:
The preparation method of described polyether glycol A is as follows: add in reactor by the polyoxypropylene polyether polyvalent alcohol of molecular weight 500, mass fraction 400 ~ 500, first instill 1 ~ 3 phosphoric acid, add the bimetallic catalyst of mass fraction 0.07 ~ 0.1 again, heat up 120 ~ 140 DEG C of vacuum hydro-extraction 2 ~ 3h, react at 130 ~ 160 DEG C with the propylene oxide of mass fraction 800 ~ 2000, react complete, obtained polyether glycol A after deviating from monomer.
Described bimetallic catalyst is dmc catalyst.
The preparation method of described polyether glycol B is as follows: the basic catalyst adding mass fraction 6 ~ 18 in the polyether glycol A of mass fraction 300 ~ 500, heat up 100 ~ 150 DEG C, the ethylene oxide passing into mass fraction 2100 ~ 4000 reacts, obtained polyether glycol B.
The preparation method of described polyether glycol C is as follows: the basic catalyst adding mass fraction 20 ~ 30 in the polyether glycol A of mass fraction 300 ~ 500, heat up 100 ~ 150 DEG C, the ethylene oxide passing into mass fraction 4000 ~ 6000 reacts, obtained polyether glycol C.
Described basic catalyst is potassium hydroxide or sodium hydroxide.
The mass ratio of described polyether glycol A, polyether glycol B, polyether glycol C three is 1 ~ 2:1 ~ 2:1 ~ 2.
The temperature of carrying out reacting with maleic anhydride is 100 ~ 120 DEG C.
The mass ratio of the total mass of described polyether glycol A, polyether glycol B, polyether glycol C and maleic anhydride, unsaturated double-bond compound, calcium chloride is 100:0.5 ~ 1:10 ~ 30:0.1 ~ 1.5.
Described unsaturated double-bond compound is vinylbenzene, vinyl cyanide, acrylate or crotonamide.
Beneficial effect of the present invention is as follows:
The emulsion splitter adopting the present invention to obtain not only all has the effect of breaking emulsion and dewatering to materials different in crude oil, and when ensureing identical dehydrating effect, consumption is less, and life cycle of the product also shortens greatly.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
Polyether glycol A:
By 400g, polyether glycol 305 adds in reactor, instills 2 phosphoric acid, adds 0.07g bimetallic catalyst DMC, and heat up 130 DEG C of vacuum hydro-extraction 2h, slowly passes into 1200g propylene oxide, fully react at 150 DEG C, obtained polyether glycol A after demonomerization.
Polyether glycol B:
With 400g polyether glycol A for raw material, add 10g potassium hydroxide, heat temperature raising 100 DEG C, pass into 2200g ethylene oxide and fully react, obtained polyether glycol B.
Polyether glycol C:
With 400g polyether glycol A for raw material, add 20g potassium hydroxide, heat temperature raising 100 DEG C, pass into 4000g ethylene oxide and fully react, obtained polyether glycol C.
Polyether glycol A, polyether glycol B, polyether glycol C are mixed according to mass ratio 1:2:2.
Be warming up to 100 DEG C with 1000g admixtured polyether for raw material, add 5g maleic anhydride and react, after reaction terminates, add 200g methyl acrylate and continue reaction 4h, finally add 12g calcium chloride and mix and obtain emulsion splitter.
Embodiment 2
Polyether glycol A:
By 500g, polyether glycol 305 adds in reactor, instills 2 phosphoric acid, adds 0.09g bimetallic catalyst DMC, and heat up 120 DEG C of vacuum hydro-extraction 3h, slowly passes into 1400g propylene oxide, fully react at 140 DEG C, obtained polyether glycol A after demonomerization.
Polyether glycol B:
With 500g polyether glycol A for raw material, add 10g potassium hydroxide, heat temperature raising 120 DEG C, pass into 2800g ethylene oxide and fully react, obtained polyether glycol B.
Polyether glycol C:
With 500g polyether glycol A for raw material, add 20g potassium hydroxide, heat temperature raising 120 DEG C, pass into 4500g ethylene oxide and fully react, obtained polyether glycol C.
Polyether glycol A, polyether glycol B, polyether glycol C are mixed according to mass ratio 1:1:2.
Be warming up to 120 DEG C with 1000g admixtured polyether for raw material, add 5g maleic anhydride and react, after reaction terminates, add 150g crotonamide and continue reaction 4h, finally add 9.5g calcium chloride and mix and obtain emulsion splitter.
Embodiment 3
Polyether glycol A:
By 1000g, polyether glycol 305 adds in reactor, instills 3 phosphoric acid, adds 0.1g bimetallic catalyst DMC, and heat up 140 DEG C of vacuum hydro-extraction 2h, slowly passes into 2000g propylene oxide, fully react at 160 DEG C, obtained polyether glycol A after demonomerization.
Polyether glycol B:
With 300g polyether glycol A for raw material, add 15g potassium hydroxide, heat temperature raising 150 DEG C, pass into 2500g ethylene oxide and fully react, obtained polyether glycol B.
Polyether glycol C:
With 300g polyether glycol A for raw material, add 24g potassium hydroxide, heat temperature raising 150 DEG C, pass into 4300g ethylene oxide and fully react, obtained polyether glycol C.
Polyether glycol A, polyether glycol B, polyether glycol C are mixed according to mass ratio 1:1:1.
Be warming up to 120 DEG C with 1000g admixtured polyether for raw material, add 10g maleic anhydride and react, after reaction terminates, add 300g vinyl cyanide and continue reaction 4h, finally add 1.3g calcium chloride and mix and obtain emulsion splitter.
The basic polyether preparing polyether glycol A in embodiment 1 ~ 3 adopts polyether glycol 305.
Compared by product in the emulsion splitter of preparation in embodiment 1 ~ 3 and prior art, consumption during identical dehydrating effect is 1/2 ~ 1/3 of existing commercially available prod consumption.Experiment proves, adopts emulsion splitter of the present invention all to have the effect of breaking emulsion and dewatering to materials different in crude oil, and when ensureing identical dehydrating effect, consumption is less, simplifies Production Flow Chart.
Claims (10)
1. the preparation method of a compound oil field demulsifier, it is characterized in that: after first the polyether glycol C of the polyether glycol B of the polyether glycol A of 1000 ~ 2000 molecular weight, 3000 ~ 5000 molecular weight, 6000 ~ 9000 molecular weight being mixed, react with maleic anhydride, add unsaturated double-bond compound again and continue reaction, finally add calcium chloride to mix, obtained compound oil field demulsifier.
2. the preparation method of compound oil field demulsifier according to claim 1, it is characterized in that: the preparation method of polyether glycol A is as follows: the polyoxypropylene polyether polyvalent alcohol of molecular weight 500, mass fraction 400 ~ 500 is added in reactor, first instill 1 ~ 3 phosphoric acid, add the bimetallic catalyst of mass fraction 0.07 ~ 0.1 again, heat up 120 ~ 140 DEG C of vacuum hydro-extraction 2 ~ 3h, react at 130 ~ 160 DEG C with the propylene oxide of mass fraction 800 ~ 2000, react complete, obtained polyether glycol A after deviating from monomer.
3. the preparation method of compound oil field demulsifier according to claim 2, is characterized in that: bimetallic catalyst is dmc catalyst.
4. the preparation method of compound oil field demulsifier according to claim 2, it is characterized in that: the preparation method of polyether glycol B is as follows: the basic catalyst adding mass fraction 6 ~ 18 in the polyether glycol A of mass fraction 300 ~ 500, heat up 100 ~ 150 DEG C, the ethylene oxide passing into mass fraction 2100 ~ 4000 reacts, obtained polyether glycol B.
5. the preparation method of compound oil field demulsifier according to claim 2, it is characterized in that: the preparation method of polyether glycol C is as follows: the basic catalyst adding mass fraction 20 ~ 30 in the polyether glycol A of mass fraction 300 ~ 500, heat up 100 ~ 150 DEG C, the ethylene oxide passing into mass fraction 4000 ~ 6000 reacts, obtained polyether glycol C.
6. the preparation method of the compound oil field demulsifier according to claim 4 or 5, is characterized in that: basic catalyst is potassium hydroxide or sodium hydroxide.
7. the preparation method of compound oil field demulsifier according to claim 1, is characterized in that: the mass ratio of polyether glycol A, polyether glycol B, polyether glycol C three is 1 ~ 2:1 ~ 2:1 ~ 2.
8. the preparation method of compound oil field demulsifier according to claim 1, is characterized in that: the temperature of carrying out reacting with maleic anhydride is 100 ~ 120 DEG C.
9. the preparation method of compound oil field demulsifier according to claim 1, is characterized in that: the mass ratio of the total mass of polyether glycol A, polyether glycol B, polyether glycol C and maleic anhydride, unsaturated double-bond compound, calcium chloride is 100:0.5 ~ 1:10 ~ 30:0.1 ~ 1.5.
10. the preparation method of compound oil field demulsifier according to claim 1, is characterized in that: unsaturated double-bond compound is vinylbenzene, vinyl cyanide, acrylate or crotonamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755691.0A CN105238439B (en) | 2015-11-09 | 2015-11-09 | The preparation method of compound oil field demulsifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755691.0A CN105238439B (en) | 2015-11-09 | 2015-11-09 | The preparation method of compound oil field demulsifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105238439A true CN105238439A (en) | 2016-01-13 |
| CN105238439B CN105238439B (en) | 2017-07-07 |
Family
ID=55036266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510755691.0A Active CN105238439B (en) | 2015-11-09 | 2015-11-09 | The preparation method of compound oil field demulsifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105238439B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112300340A (en) * | 2019-10-29 | 2021-02-02 | 中海油(天津)油田化工有限公司 | Nonionic-cationic copolymer containing polyether branch chain and preparation method thereof |
| CN115449395A (en) * | 2022-09-15 | 2022-12-09 | 中海油(天津)油田化工有限公司 | Preparation method of high-flash-point compound demulsifier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317544A (en) * | 2001-04-18 | 2001-10-17 | 东南大学 | Polymer-type efficient demulsifier for emulsion of crude oil and its synthesizing process |
| CN102786639A (en) * | 2012-08-27 | 2012-11-21 | 句容宁武高新技术发展有限公司 | Preparation method of high performance demulsifier |
| CN102807748A (en) * | 2012-08-31 | 2012-12-05 | 句容宁武高新技术发展有限公司 | Preparation method of complex oilfield demulsifier |
| CN102807890A (en) * | 2012-08-31 | 2012-12-05 | 句容宁武高新技术发展有限公司 | Method for preparing demulsifier |
-
2015
- 2015-11-09 CN CN201510755691.0A patent/CN105238439B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317544A (en) * | 2001-04-18 | 2001-10-17 | 东南大学 | Polymer-type efficient demulsifier for emulsion of crude oil and its synthesizing process |
| CN102786639A (en) * | 2012-08-27 | 2012-11-21 | 句容宁武高新技术发展有限公司 | Preparation method of high performance demulsifier |
| CN102807748A (en) * | 2012-08-31 | 2012-12-05 | 句容宁武高新技术发展有限公司 | Preparation method of complex oilfield demulsifier |
| CN102807890A (en) * | 2012-08-31 | 2012-12-05 | 句容宁武高新技术发展有限公司 | Method for preparing demulsifier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112300340A (en) * | 2019-10-29 | 2021-02-02 | 中海油(天津)油田化工有限公司 | Nonionic-cationic copolymer containing polyether branch chain and preparation method thereof |
| CN112300340B (en) * | 2019-10-29 | 2022-11-15 | 中海油(天津)油田化工有限公司 | Nonionic-cationic copolymer containing polyether branch chain and preparation method thereof |
| CN115449395A (en) * | 2022-09-15 | 2022-12-09 | 中海油(天津)油田化工有限公司 | Preparation method of high-flash-point compound demulsifier |
| CN115449395B (en) * | 2022-09-15 | 2024-01-19 | 中海油(天津)油田化工有限公司 | Preparation method of high-flash-point compound demulsifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105238439B (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104292451A (en) | Preparation method and application of unsaturated polyether | |
| CN100390129C (en) | Bio-based polyhydric alcohol prepared by using rape seed oil | |
| MY181276A (en) | Polyester and method for preparing such a polyester | |
| CN105236798A (en) | Preparation method of naphthalene-series water reducing agent | |
| CN105238439A (en) | Preparation method of compound type oil field demulsifier | |
| CN103554382A (en) | Method for solid-phase synthesizing polycarboxylic acid water reducer | |
| CN104028218A (en) | Low-cost high-activity catalytic type desulphurization active coke and preparation method thereof | |
| CN105330831A (en) | Polyether polyol used for polyurethane single-component grouting materials and preparation method and application thereof | |
| CN102399577A (en) | Chemical settling dehydration method for thick oil transition zone ageing oil | |
| CN102874938A (en) | Phosphoric acid equipment pipeline scale inhibitor | |
| CN104311813A (en) | Antioxidant polyether polyol and preparation method thereof | |
| CN103130843A (en) | Method of recycling and reusing of dibutyltin oxide in process of cane sugars manufacturing cane suger-6-ethyl ester | |
| CN102786639A (en) | Preparation method of high performance demulsifier | |
| CN102807748B (en) | Preparation method of complex oilfield demulsifier | |
| CN104372170A (en) | Method and system for manufacturing cooled slag-making pellets from steel plant dedusting ash or steel plant sludge | |
| CN105330783A (en) | Preparation method of silane modified concrete internal curing agent | |
| CN102936349B (en) | Production method of solid polycarboxylic acid water reducing agent | |
| CN104845739A (en) | Method for preparing grease polyol from epoxy grease and grease polyol | |
| CN102417543B (en) | Method for utilizing potassium permanganate to reduce content of SO2 in edible corn starch | |
| CN104084091A (en) | Preparation method of rosin-based surfactant | |
| CN103709392A (en) | Preparation method of polyether polyol for automobile sealant | |
| CN103755885A (en) | Method for solid-phase synthesis of polycarboxylate water reducer by virtue of microwave assistance | |
| CN103467805A (en) | Usable recovered rubber and preparation method thereof | |
| CN105523902A (en) | Preparation method of 1-(2-chloroethoxy)propane | |
| CN104592528B (en) | A kind of method of low temperature lactate synthesis combed carboxylic acid polyalcohol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |